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Finding the Fourth Proportional to 390,519, 585,836.82 and 141,259.32

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Solution

The fourth proportional to 390,519, 585,836.82 and 141,259.32 is: 211,910.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,519 : 585,836.82 = 141,259.32 : x
  2. Step 2: Convert to fraction form
    390,519/585,836.82 = 141,259.32/x
  3. Step 3: Cross multiply
    390,519x = 585,836.82 × 141,259.32
  4. Step 4: Simplify right side
    390,519x = 82,754,910,824.16
  5. Step 5: Solve for x
    x = 82,754,910,824.16/390,519
  6. Step 6: Final answer
    x = 211,910.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.